Doffing apparatus for spinning frames



Feb. 9 1.926.

1,572,103 R.B.BUCHANAN DOFFING APPARATUS FOR SPINNING FRAMES Filed June 24, 1925 4 Sheets-Sheet l 6.2 da @El 'E @ik L 55 Feb. 9,1926.

R. B. BUCHANAN DOFFING APPARATUS FOR SPINNING FRAMES Filed June 24, 1925 4 Sheets-Sheet 2 Feb. 9 1926. 1,572,103

R.B.BUQHANAN DOFFING .1^.PP.1\R.'\'I.USl FOR lSPINNING FRAMES Filed June 24, 1925 4 Sheets-Sheet 5 R. B. BUCHANAN DQFFING APPARATUS FOR SPINNING FRAMES Filed June 24, 1925 4 Sheets-Sheet 4 .fnv-en? an 7 Habana Cil Patented Feb. 9, 1926. l

UNITED AE y ROBERT BURNETT BUCHANAN, or ixm'rnron, mirante; canapa.

DOFFING APPARATUS Forti sinni'li ItAM-s.

Application fired June 24, 1925. serial-no.- 39ste;-

f/ '0 all wliom zi't may concern:

Be it known that I, Romina?y BURNETT BGHANAN, a subject of the King of Grrea-tv Britain, and a resident of the city of Hamilton, inthe county ot lVentworth, in the Province of 0ntari0,' Canada, have invented certain new and useful Improvements in Dotting- Apparatus for Spinning Frames, of which the .following is the speciication.

My Vinvention relates'to improvements in doti-ing apparatus for spinning frames ot thelrin'd designed to travel along the sides ofthe spinningirame to remove the full bobbins from thespinning spindles and' ref place themfby'empty' bobbins and the object of the invent-ion. is to devise means for removing a predetermined number of the full bobbins at a time and replace them by the san'ievnumber of empty bobbins.

Another object is to devise means for shitting the full bobbin chuck arms out of alignment with 'the vspinning spindles in order to permit the emptyT bobbin chuck arin's to come-down in alignment with the spindles, thus enabling the device to remain stationary during the complete operation 0n a section of bobbins.

A still further Objectis to devise means 'tor.preventing the breaking of the yarn between the spindle and the trolls and to shear the yarn between the spindle and the removed bobbins at the requisite moment.

And a further object. is to devise an improved means for supplying the empty bob' bins to their chucks whereby any separate handling of the empty bobbins is eliminated.

Hy invention consists of a dotling apparatus constructed and arranged, all as hereiuat'ter more particularly described and iilustratedin the accompanying drawings iu which:

. Fig. 1 represents a front view ot my apparatus with a section oi trame and spindles showing the operation of placing the empty hohhins on such spindle.

Fig. 2 is a vertical cross section through the line 2 2 (Figure 1) showing a chuck about to remove a full bobbin and also showing the .empty bobbin chuck about to receive an empty bobbin.

lig. is a similar view to Figure 2 showing the full bobbin released from the full bobbin chuck.

.Fig` 4 is a similar fragmentary view to Figures 2 and 3 showing the empty bobbin on its chuck? about :to be lowered onto a spindle.

Figui-5 isa vertical cross section through tite 'line 5`+15 (Figurel 1)v showing the traversing action-'on' the'emptybobbin ar1n shaft. e. i v

aiFig. thisl al fragmentary v1section through theI line 6-5-6 (Figurel) showing'an empty bobbin arm inetlie position illustrated in Eigiile 1?.-4 yz ff Fig. 7 is a horizontal-section through the' line 7-#7 (Fgnre'y Figay 8; is :ay fragmentary section throu Figa y9 -iswan e-ndfelevation 'of theapparatus: 1fnom the' peratingfendshowing the means for actuating the full. and empty bobbin arm..shai"cs.'rj

Figli) is an1 end elevation of the opposite end of the appara-tusshowing the cam motion for shiftingithe'full .bobbin shaft and the traversing and lowering means for the empty bobbin shaft.

Fi',1.;,11.\is detail, in: plan 'of 'one' ot the tull bobbin chuck trips.4

.-Figf12 is an enlarged elevational detail of one of myl empty bobbin'chu'clzs showing thesame .invthe open:y position.

F ign-13 is'a similar view to Figure 12 showing'the chuck-in the'bobbin gripping position.- f

Fig-*14 is 'anelevational detail partly in section of a full bobbin chuck and. showing` the neans for taking care of bobbins ot vary-ing lengths.v

Fig. 15 is a plan View ot the arm shown in Figure 14. 1

Fig. 16 is a side eleva-tion of an empty bobbin hopper.

Fig.A 17 4is a sectional view through the shaft 3, and meshing with the main drive gear 5 secured to the main drive shaft 6 which is journalled in the casing-ends. R7 ,1s an intermittenti drive gear 'sec'r'ed toithe shaft 6 and meshing with the pinion8.` on the dofhng drive shaft` 9 ,which is( provided with a crank 10 connected to "acrank 11 by the connecting rod 12,saidcifan-kl 11,; being secured to the full bobbin arm shaft 13 which is slidably journalled- -in the 'casing 1. The connection is so arranged that the ,crank 11`:Will be rocked while theLcrank 10 revolves.' A l.

, .rThe intermittent gear 7' also meshes' with awpini'onf14von the elevating shaft 15nvhloh carries Iatits .ends theicranks 16 connected 'by the connecting rods 17 with theslides 18 iny the `guides' 11) A vhiclr zare lsecured". to lthe casing ends. 20f fis aanf 'empty' bobbin arm shaft journalled' e ati its end's in' the slides 18;

shaft 23 provided*atiitsiopposite end'with'jai crankz24whichiis'connected through a ip'in 25slidingvin vertical slot 26 ina transverse sl i`de.:27. .Tlieiopposite end ofthe slide 27 is provided with a long verticalzslot 28 into' which extends the pin 29 on-the empty boh- 30 binfoperatin'g arm 30 "Which'is'secured to the empty bobbin arm 'shaft20.t I f'lhe "main-'drivei'shaft Salso carriesl the cylindrical cam 31 inffwhich'iertends lthe roller 32 journalledf-on'the' lower lend of 35 the lever 33 which is fulcrumed intermediately '-of' its length on the casing 1. The upper'end of the llever 33 is provided'with a fork 34 eXtendingaroun'd-theE spool 35 on the end of thefull bobbing arrnshaft 13. 36 is a"balancing quadrant securedto the shaft 13 and 37 is a spiral spring lsecured at one endthereto and to: the casing 1 at the other end. v 38` are the full bobbin receiving chucks which may be of any suitable construction to grip the uncovered portion of the bobbins suc-h as 'that described in my co-pending application lfor chucks. filed October 15th. 1924 nnder Serial Number 7 43,808. Each of these chucks 38 is pivo'ted to a portion 39 of the full bobbin arm 40 to which such portion is pivot-ed, and resiliently held in place by means of the? spring 41 extending,r around the headed pin 42 which extends freely through 'the portion 39, being secured in the arm 40. y

The empty bobbin arm shaft 2() carries the arms 43 to the extremities of Which are pivoted the empty bobbin chucks 44, each of which consists of a shoe 45 secured to a stein 46 which extends freely through the body of l he chuck 44.

47 is 'aspring interposed between the body 44 and the shoe` 45. 48 is a latch pivoted on the shoe 45 and carrying the tension spring The opposite end of the main drive shaft AVAILABLE CGPY 49 which is designed to coact with the shoe tohold'the bobbin. 50 is a latching lug on the body 44 adapted to coact with the free ,end of the latch 48. 51 is a releasing shoe .gitudinal' bar 55 which is secured to the casing` 1, said tripping shoes being so disposed to engage the trips 53 uponthe arms 43 being swung upwardly to the hopper 5G.

57 is a lever fulcrulned on the casing 1 and carrying-a roller which is engaged by the crank l() as it revolves, thus lifting the lever, to the free end of which is connected the .rod 59 which is in turn connected at its upper end to the lever 60 secured to the shaft ($1 which extends longitudinally of the apparatus and is jonrnalied on the casing ends. G2 are-forked full bobbinI chuck releasing trips vwhich are adapted to coact with the headed stems 63 of the chucks 38.

' 64 are the empty bohbins and 65 are the full bobbins rlhe bobbins 64 are loaded into the hopper 55 which is so constructed that the bottom is inclined to the horizontal so` that the bobbins lie With their tops elevated above their lon-er ends.

66 are offsets disposed intermediately of the hopper Walls in order to prevent the Weight of the bobbin in the offsets being putl onto the lower bobbin about to be received into the chuck 44. One side Wall of the hopper is cut away so as to permit the chuck 44 gripping the end of the bobbin 64,

67 is a yarn rail curved rearwardly at its ends which are secured te the slide brackets G8 adapted to slide on the guides 69. 70 are rods connected at their upper ends to the slide brackets and at their lower ends to thc collars 71 freely mounted on the shaft 20.

72 is a stationary toothed shearing plate secured to the front of the casing 1, and upon which is slidably mounted the toothed sheariiig plate 73 which is attached by the link 74 to the operating lever 75 which is pivoted on the casing 1. 76 is a bell crank lever fulcrnmed on the casing 1 and coni'iec-ted by the link 7 7 with the lever 75. The other end is connected to a link 78 which is slidably connected to the spindle 79 of the latchingl device, said spindle being slidably mounted in the double bracket 80.

81 is a spring interposed between the collar 82 on the lower end of the spindle 79 and the lower of the double brackets 80. 83 is a double latching cam secured to the spindle 79 and provided With a pin receiving notch 84 in its lower face. said notch being adapted to receive one of the pins 85 on the spindle carrying' rail 8G of the spinning frame. 87 are bobbin receiving spindles thereon. The apparatus is slid along the lower flange of dotted line position'.

mal-.10.3

the rail 86 through the medium of the Wheels- 88f-rotatahl`y mounted onthe front of the casing 1;A

.Inusing my apparatus the frame isdoted by sections and .I Will now descriheftlhe comturned in the required 'direction Twhich.turns 1 the shaft 3 and attached'pinion 'et which turns the drive gear 5 on y'the mainfshaft 6 thus turning the intermittent lgear 7, b`ring.

ing its toothed section into mesh with. the pinion 8 which turns the shaft 9 and crank- 10, causing it "to makeonecomplete revo-. l

lution. The connected 4crank 1 1v is thus rocked frmithe position illustrated in do'tted; lines` inFigure 2 .tothe position illusv trated in full 'lines wherein the chuck 38 gripsthe full bobbin 65, andsubsequently is swung with the. full bobbin hack the During thev movement of the| bobhin. '65 from its posit-ion on the spindle *87 to the dotted line position in F ig'jure2V the yarn is unbroken and lies across the shear plates 72',` and 7 3 to its turn a-round the spindles 87.

Thile lthe chuck arms Iil() are returning from the spindles 87 tothe stopping position the camv 31 is functioning with respect to the lever 33 and swinging the upper. end of the lever outward thus sliding the shaft 13 longitudinally so that the arms et() and chucks 38 areout Vof alignment with the' spindles 87 and tlieiarms 43.

@ne toothed section of the intermittent gear 21 on the shaft 6 now -comes into mesh with the pinion 22 on the shaft` 23, thus turningthe crank 21 a halt revolution and sliding forward the slide 27 with'tlie result that the crank 30 is swung in a clock-wise direction through the medium ot the pin 29 `engaging the wall of the slot 28. The swinging ot' the crank 30 turns the shaft 2O and thus swings the arms 43 from the position illustrated in full lines in Figure 2 to the position illustrated in dotted linesin that figure.

The toothed section of the gear 7 now meshes with the pinion 14 and thus rotates the shaft 15. Thus the slides 18 and shaft 2() journalled therein are lowered through the medium of the cranks 16 and connecting rods 17, thus depositing the empty bobhins 64 onto the spindles 87 wherein the yarn is locked in the spindle cup, and returning to the uppermost position Whereinvthe arms 43 are again in the posit-ion illustrated in dotted lines in Figure 2.

The second toothed section o't -the gear 21 now meshes with the pinion 22 turning the shaft 23 another half revolution with BEST AVAlLABLE COPY the result that the reciprocation ot the slide 27 is complete vand the-.shaft 2O is turned in the opposite direction so that the arms 43 are swung back from the dotted posit-ion (Figure to :they full line position..4

When tie. arms 4:3' @emrlstethein Upward traverse movement the vchuck 4 4 is pressed over, the empty bobbins 64 in the hopper 56.

'.'Ifhe apparatusis now Vready to be moved to the next section of loobbins.y The lever 7 is actuated, Awhich through .the Link 74 pushes the shearing plat/@73 along, shearing the yarn between its teeth and the teeth of the stationary shearing plate 72. -Simultaneously .-tl iej bell crank.. 76 :is swung througlr the, link 7 7.- drawing upf the; link 78 and thespindle'79 and attached latching cam 83 which gis now disengaged. from the. pin 85. '.l-he'apparatus` is now moved to the ne.\-t. sect-ion; ofgbobbins and the above Operai-1mirepeatefl-aA The first portion ,ot thelreciprocation of ther arms...-t 0 zst vings such'arms .which have already" receiveduin their. chucks full bobbins from the previousgoperation, upwardly tinto; thegpositioir illustrated Y"in Figure, 3, whereinthejforked'ftrips Y62 Aengagethe chucksteins .3-'and release the full bobbinsg65-which drop int-o the box' 89 in the apparatus. y u

'When the apparatus is moved along to the next section ot bobhinsthe-yarn rail 67 is just above the top ofr` the full hobbins 65 on the spindlesj87andY as such yarn rail is disposed forWardl-yof vthe front of the apparatusit engages the ,yarns betweenl the spindles and ythe rolls, thrusting them hack of 'the spindles; ,When .they shaft 20 fis lowered ltothe bolobin depositing position the collars 71 and rods 70- pull down the slide brackets 68,' thus pushing the yarns and travellers .(not. shown) to theA hac-k ot the rings preventing the yarns 'fouling the empty bobhins whenthey are deposited. ou the spindles 87.

I will now describe the operation ot ,the individua-l chucks-..44 Vwhich receive. the empty lio-bloins 64 from the hopper 56. In Figure 13 the respective parts are inI the position in which they are pressed over the exposed ends ot the bobbins 64 in the hopper 56. In this position the free end of the latch 48 has ridden up onto the lug 50 so that the tension springl 49 is pressing the bobhin against the shoe 45. `While it is in this position the trip 53 is against the bracket 5 4 whichholds down the rocker shoe 51 hy means of the lug 52, thus preventing the latch 48 from functioning while the arms 43 are in'such position.

Then the arms 43 are traversed to the position illustrated in dotted lines in Figure 2, the weight. ot the bohbins and chucks ital cause them to remain in the perpendicular position and thu-s be finally suspended above loo - rilallg the vpresentl method c @Milling by hand.. :rh l

the spindles. V'vyh en the arms 43 are' lowered their-full extent the suspendedl lio'hloins 64 are Y pressed against the hot-toms vofthe spindles, thus causing a thrust. 'onv the shoes 45 which are pressed upwardly 'againstl the spring 47. lVhen this is done' the tension of the .springs 49 cause vthe latches 48" to function into the latched openpositionfil-f lust-rated in Figure l2Y which release'slthe gripcnthehobhins G4. *il

When the :chucks 4l on the arms''are returned again to the position adjacent theV brackets 54 the trips 53 iirst :engagethe brackets 5 4 which causes them'to tip' untilf thetrips 23 come lincontact 'with ltlie braclltet ll'ihc lug' 52 then Ipresses]down -the-'rocking' releasing- "shoe [51, llitt-ing the latch '48 before theshoe 45 comes in contact 'with the` empty ho'hbin'injthehopperv R(5.

Fromthe above description itwill heap# parent that I hui-'edeyised 'a 'simple f1 ndet'-'" festive apparatusthat willA doti."l the -lo'obbin of ring spinning'frames mecha-ni rilyftliiis 'da t re That I claim vas ,my invention'is:

'1. In a vdoiinrmachine for, vspinning frames, the combination with the spinning frame hohhin spindles, of a'movahle casing including a full hohhin receiving receptacle, an empty hoh'bin' hopper, an 'oscillatablc sha-ft longitudinally slidable 'in the casing, arms thereon, full hohhin gripping chucks on the arms, a second oscillatahle shaft` arms thereon, empty hobhin gripping chucks en the arms, means for successively swing? ing the'shai'ts to 'bring the respective full and empty boh'bin chucl-:s into their loohbin f gripping position and into the chuck releasing positions, and means for slidingT the full hobbin arm shaft longitudnally to escape the arms 0l the empty hohloin arm shaft.

Q. In a doiiing machine for spinning frames, the combination with the spinning,l frame oohbin spindles, of a movable casing including a full hohhin receiving receptacle, an empty hohbin hopper, an oscillatablcshaft longitudinally shdable in the casing,

. arms thereon, full bobhin gripping chucks on the arms, a second oscillatable shaft, arms thereon, empty bohbin gripping chucks on the arms, means vfor successively swing'- ingY the shafts to bring the respective full and empty hohhin chucks into their bohhin gripping positions and into the chuck releasing positions, means for successively lowering and raising the empty bobbin arm shaft whereby the chucks are moved down and -up perpendicularly over "the spinning frame spindles, and means for sliding the full bobliin arm shaft longitudinally to escape the arms of the empty hohhin arm shaft.

In adoiling,r machine for spinningr frames, the combination with the spinning BEST AVAlLABLE COPY @asingi' seiuatabiee, ty bebb'' (l, arm. shaftfi'n'e'aii's' foig i'nonn'tii iig` the ,shaft the' casing"sox '-thati't isv 'capable "of` up an" down movement, arms enithe shaft; empty hohoin engagingchucksien v,the armsi onl the casing' foiflatchingthe chucks; means for oscillating "t'he'armS, ."and` means "for moving the' shaft' dovvn "andi4 Subsequent] up soy that A 'the-f c'lnirzk'swill;y traye'l dicularly' 'o'v r'l th 'e"spiln'd' ozplacej'thc empty hohbinsf'thereon, and` Withdraw the chucks from the'"emptybohbir'is.` 1"

5. In a v.doiing "machine tf'oi' spinning, frames, the comloination` 'Witli'gthe liohhin spindles on 'the (spinningfrL ne, a movable casing, an, oscillatable l empty 'hohloinV 'chuck arm shaft', nieans'foi, mountingfthe[shaft in: the. casingzso that' it is capableof up and loun moyemenhfarms" onzthe shaft,r emptj,v

hobbin engagingchuckspnlthe arms, means on the casing'forlatchinghef'cliucls,'meansv for'oscillating"Lthefarms, rnd "means foe moving the shaft 'doivn andr st ihsequentlj'` up ,so that .the chueksjwill travel perpendicuiarlj," over the spindle'to placeyf'ythe empty hohhins thereonrand ,nf'ithdrat the chucks from the'emptyhohloins, said mean:` including an intermittent driven n'ear, and an operative connection hetneen the inteimittent driven gear and theeinpty hehhin arm shaft for successively oscillating it and n'iovingv it down andv upf.' i

6. In a doi'ing machinefor spinning. frames, the combination" With the hobbin spindles on the spinning,r frame, a movable casing, an oscillatalole empty bohbin'chuck.

arm shaft, means for mounting the shaft in the c .sing so that it 'is capable" of up and down movement, arms on the shaft, empty honhin engaging chucks on'the armsfmeans' Y nu.

i'gevaiba f5 ontlie casing Ifor -latching the chucks, means for oscillating the arms, and means ffor moving' tlieshaft 'down' and' 'subsequently up lso lthat 'the chucks vwill :travel perpen dienlar'ly "over the V:spindle vto' place -thc empty bobbinstheieon, and withdraw the' chucks from the'je'x'npty bbbinasaid'meane including an intermittent driven (fear, a transversely 'operableslide 'for' oscillating the shaft, lva vertically operable slide for mo'ving'the lshaft "down" andA up and` op- I. erableconnection's vbet-Ween, ftherespectivc slides'ffor actuatingthem.v

cape contact with ,the arms 7. In a dofling machine for spinning frames, an einpty'ibobbi-n chuck arm shaft, chuck carrying arms thereon, -Ineans for o'scillatinfy theeinl tygbobljin chuck'arm shaft,

- aen-1% main drive :'sha'ft,-means "forA driving-fthe main drive shaft, a crank connection between the main drive shaft and ftheffull bobbin 'chucha-'rm Isha-'ft Wherebythe latter is oscilla-ted onthe rotation-of the former, and

A means onthe maindrive shaft co-ope'ratingr with means on the full bobbin chuck arm shaft'whereby the flatter is moved longitudinally. i

9 In a dofling machine for lspinning frames, a full bobbinA chuck arm shaft, a main drive shaft, an intermittent gear for driving the main drive shaft, a crank connection between the main drive shaft and the full bobbin chuck arm shaft whereby the latter is oscillated on the rotation of the former, a cam on the main drive shaft, a. swingable lever having one end operatively connected to the cam, and its other end operativelyT connected to the full bobbin chuck arm shaft.

10. In a doing machine for sfpinning frames, a movable casing, an empty bobbin chuck arm oscillatable shaft mounted in the casing, an arm thereon, a latching chuck swingably mounted on the arm, an empty bobbin hopper, means on the casing for un- A latching the chuck upon its being moved into lil) the empty bobbin engaging position.

11. In a doling machine for spinning' frames, the combination with the spinning frame bobbin spindles, and full bobbins thereon, of means for removing the full bobbins from the spindles, an oscillatable empty bobbin chuck arm shaft movable up and down, and means engaging the yarns between the full bobbins and the rolls for pressing them back from the spindles, said means connected to and moving up and downv with vthe vertical movement of the empty bobbin chuck arm shaft.

'12.. In 'a'l vdoiing machine forl spinning frames, lthe combination with the spinning framebobbinspindles, and full bobbins thereonfo'f vmeans for removing the full bobbins from the spindles,.an oscillatable empty bobbin chuck "arm shaft movable up' Aand down, a 'casingv in which' the shaft'is mounted, slide guides onthe casing n`ds,"slides` thereon, forwardly extending brackets on the slides, a yarn rail extending between the brackets, and operative connections between brackets and shaft.` .7

i ,13. Inf a doiin'g machine for lspinning frames,thecombination vlvWit-h the spinning frame" lbobbi'n'" spindles, and `full bobbins thereon, of means forir'ernoving the full bobbinsffrom the spindles, an oscillatable empty bobbin chn'ckar'm shaft movable up and down, a;casing in which the 'shaft is mounted, slide guides on the casing ends, slides tlierec'inl,A forwardly LeXtending-brackets on the slide's,- ayar'n -rail 'extending y"between the brackets, collars loosely' mounted on the shaft and lrods each c'mnectedv atv one end to a colla-r and a'tfitsother end'yto aj slide.

14. In 'alfdoiing machinef for spinning fra1nes,"tlie combination with the spinning ramefbobbin spindles, o'fa movable casing including a full-lbobbin-receiving receptacle,- an empty Lbobbin hopper, :means for transferring'an empty bobbin from thehopper to a spindle, means. for transferring a full bobbin from a spindleto'tliereceptacla'and means -or 'positioningthe movable casing vertically 'with 'l respect to vthe vspinning frame.

15. In a cloning machine for spinning frames, the combination with the spinning frame bobbin spindles, of a movable casing including a full bobbin receiving receptacle,

an empty bobbin hopper, means for transferring an empty bobbin from the hopper to a spindle, means for transferring a full bobbin from a spindle to the receptacle, and means for positioning the movable casing vertically with respect to the spinning frame, Said means permitting longitudinal movement of the casing with respect to the frame.

16. In a doing machine far spinning frames, the combination with a movable casing, of a longitudinal rail on the spinning frame, a plurality of spaced apart pins on the rail, a vertically movable spring latch on the forward face of the casing adapted to coact with a pin, manually operable lneans for releasing the latch from the pin, and yarn cutting shears on the forward face of the casing operated by the manually opel ated latch releasing means.

1,7. In a dolling machine for spinning frames, the combination with a movable casing.l of a spring-held casing positioning latch on the front of the casing, yarn cut- 6 A1,572,1oz3.

tin-g shears on the front of the casing, and means for releasing the latch, said means synchronously actuating the cutting shea-rs. 18. In a domng machine for spinning frames, an empty bobbin chuck comprising r a body, a bobbin engaging shoe, a headed shoe stem extending freely into the body, a spring on the stemfor normally holding the shoe in its spaced apart position with respect to the body, latch actuated means for gripping the bobbin between it and the shoe, and a trip 'for the latch actuated means. y t Y :l 20. In a doning machine for spinning Jtrames, an empty bobbin hopperhaving an inclined bottom and open top and so-constructed that empty bobbins introduced into the hopper through the open top will .lie therein with their longitudinal axes substantially parallel to the inclined bottom.

2l, In a doliing machine for spinning frames, an empty bobbin hopper` having an inclined bottom and open top and so constructed that empty bobbins introduced into the hopper through the open top Will lie therein With their longitudinal axes substantia-lly parallel to the inclined bottom, the bottom portion of the hopper being eut away EEST AVALABLE COPY to expose the head portion of the lowermost emptyy bobbin in thev hopper.

22. In a doling machine for spinning 40 frames, an empty bobbin hopper, its side walls being correspondingly bellied inter mediately of their height,:the belly on one side wall extending partially-'across the interior of thehopper whereby the Weight of the upper empty? bobbins istaken on such belly instead of on the, lowermost bobbin.

In a doiing machine, an empty bobbin hopper and Imeans disposed vintermediately of the height thereofiortaking the weight of the upper bobbins olf the lower bobbins.

24. In a dofling machine, an emptyibobbin hopper, empty bobbins therein, a portion of the hopper beingeut awaytoexposmthe head portion offfeachbobbin on thehopper successivelyv upon the one nent, below it be ing removed, and movable,v means: adapted to grip the exposed head. portionr ofrIeach successive'bobbin1 and. pick itjoutoffthe hoppenl auf.' i

25. In a doingwmachine,... for spinning frames, thelcombinationwith f. spinning frame bobbin spindles, an empty bobbin hopper and affull EbobbinY,receptacle, ofI independentv movable .means adapted' to ygrip 65 the head portions; of. the Iempty; andv ,fullpbobf bins respectively, means for .removing the gripped full bobbins from. thespindles and depositing them into (the vf lveceptacle, and

means for` picking the gripped empty bob- 70 bins out of the hopper, carrying them to and placing them on the spindles.

ROBERT BURTT BUCHANAN. 

